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  <h2 class="title">新类</h2>
  <p class="simpara">
   PHP 5.3.0 新增了以下类:
  </p>

  <p class="simpara"><a href="book.datetime.html" class="link">日期/时间</a>:</p>
  <ul class="itemizedlist">
   <li class="listitem">
    <span class="simpara">
     <a href="class.dateinterval.html" class="classname">DateInterval</a>
    </span>
   </li>
   <li class="listitem">
    <span class="simpara">
     <a href="class.dateperiod.html" class="classname">DatePeriod</a>
    </span>
   </li>
  </ul>

  <p class="simpara"><a href="book.phar.html" class="link">Phar</a>:</p>
  <ul class="itemizedlist">
   <li class="listitem">
    <span class="simpara">
     <a href="class.phar.html" class="classname">Phar</a>
    </span>
   </li>
   <li class="listitem">
    <span class="simpara">
     <a href="class.phardata.html" class="classname">PharData</a>
    </span>
   </li>
   <li class="listitem">
    <span class="simpara">
     <a href="class.pharexception.html" class="classname">PharException</a>
    </span>
   </li>
   <li class="listitem">
    <span class="simpara">
     <a href="class.pharfileinfo.html" class="classname">PharFileInfo</a>
    </span>
   </li>
  </ul>

  <p class="simpara"><a href="book.spl.html" class="link">SPL</a>:</p>
  <ul class="itemizedlist">
   <li class="listitem">
    <span class="simpara">
     <a href="class.filesystemiterator.html" class="classname">FilesystemIterator</a>
    </span>
   </li>
   <li class="listitem">
    <span class="simpara">
     <a href="class.globiterator.html" class="classname">GlobIterator</a>
    </span>
   </li>
   <li class="listitem">
    <span class="simpara">
     <a href="class.multipleiterator.html" class="classname">MultipleIterator</a>
    </span>
   </li>
   <li class="listitem">
    <span class="simpara">
     <a href="class.recursivetreeiterator.html" class="classname">RecursiveTreeIterator</a>
    </span>
   </li>
   <li class="listitem">
    <span class="simpara">
     <a href="class.spldoublylinkedlist.html" class="classname">SplDoublyLinkedList</a>
    </span>
   </li>
   <li class="listitem">
    <span class="simpara">
     <a href="class.splfixedarray.html" class="classname">SplFixedArray</a>
    </span>
   </li>
   <li class="listitem">
    <span class="simpara">
     <a href="class.splheap.html" class="classname">SplHeap</a>
    </span>
   </li>
   <li class="listitem">
    <span class="simpara">
     <a href="class.splmaxheap.html" class="classname">SplMaxHeap</a>
    </span>
   </li>
   <li class="listitem">
    <span class="simpara">
     <a href="class.splminheap.html" class="classname">SplMinHeap</a>
    </span>
   </li>
   <li class="listitem">
    <span class="simpara">
     <a href="class.splpriorityqueue.html" class="classname">SplPriorityQueue</a>
    </span>
   </li>
   <li class="listitem">
    <span class="simpara">
     <a href="class.splqueue.html" class="classname">SplQueue</a>
    </span>
   </li>
   <li class="listitem">
    <span class="simpara">
     <a href="class.splstack.html" class="classname">SplStack</a>
    </span>
   </li>
  </ul>
 </div><hr /><div class="manualnavbar" style="text-align: center;">
 <div class="prev" style="text-align: left; float: left;"><a href="migration53.extensions-other.html">Other changes to extensions</a></div>
 <div class="next" style="text-align: right; float: right;"><a href="migration53.global-constants.html">新的全局常量</a></div>
 <div class="up"><a href="migration53.html">从 PHP 5.2.x 移植到 PHP 5.3.x</a></div>
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